/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.uva.dbcs.practica1.web.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.uva.dbcs.practica1.business.ILoginUser;
import com.uva.dbcs.practica1.business.LoginUser;

/**
 *
 * @author maikel
 */
@WebServlet(name = "Controlador_AlquilerVehiculo", urlPatterns = {"/Control"})
public class Controlador extends HttpServlet {


	
	private static final long serialVersionUID = 1L;
	private String ruta = "";

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException, SQLException, ClassNotFoundException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();

        try {
            HttpSession sesion = request.getSession();
            if (sesion.getAttribute("usuario") == null) { // si no existe una sesion

                int idCliente = 0;
                String usuario = request.getParameter("usuario");
                String contrasena = request.getParameter("contrasena");

                ILoginUser validar = new LoginUser();
                if (!validar.validarUsuario(usuario)) {
                    //throw new MiTiendaException("Usuario No Registrado");
                    out.println("No existe el usuario");
                } else {

                    if (!validar.validarContrasena(usuario, contrasena)) {
                        //throw new MiTiendaException("Clave incorrecta");
                        out.println("Contraseña incorrecta");
                    } else {
                        idCliente = validar.obtenerIdCliente(usuario);
                        
                        //se crean las variables sesiones del nombre de usuario
                        // y su identificador en la BD
                        sesion.setAttribute("usuario", usuario);
                        sesion.setAttribute("us_id", idCliente);
                        
                        //se define la ruta a donde se debe redireccionar la acción
                        this.ruta = "/WEB-INF/bienvenido.jsp";
                        RequestDispatcher respuesta = getServletContext().getRequestDispatcher(this.ruta);
                        respuesta.forward(request, response);
                        // sesion.setAttribute("siguienteURL", ruta);
                    }
                }

            } else { //si existe una sesion
                //Aquí va lo que pasa si ya existe una sesion
                //Debe ser la parte de buscar vehiculos disponibles 
                // y comprobar la categoria del carnet del Cliente
                //......
            }

        } finally {
            out.close();
            //  RequestDispatcher respuesta = getServletContext().getRequestDispatcher(this.ruta);
            //  respuesta.forward(request, response);
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (SQLException ex) {
            Logger.getLogger(Controlador.class.getName()).log(Level.SEVERE, null, ex);
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(Controlador.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (SQLException ex) {
            Logger.getLogger(Controlador.class.getName()).log(Level.SEVERE, null, ex);
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(Controlador.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
